confused on 23-30. please help!

Use the following to answer questions 2022 At the besinning of the year; the company's allowance for uncollectible occounts had a beginning balance 0 On January 22 nd, the company wrote off the A/R from curtomer C for $500 21. $200 By the end of the year (December 31% ); total accounts written off were $7,800 (inclu write off for customer C). What is the balance in the allowance for uncollectible accounts after all t offs? 22. \$ How much did bad debt expense change when the company wrote off the accounts rec Use the following to answer questions 2325 The company invested $100,000 on August 1,20xA at 9% simple interest for 2 years. 23.5 Dotermine interest fevenue for 20A 24.5 Determine interest revenue for 20xx 25. $ Determine interest revenue for 20C Use the following to answer questions 26-27 The company invested $100,000 on April 1, 20XA at 6% simple interest for 1 year. 26. $ Determine interest revenue for 20A 27.$ Determine interest revenue for 208 Use the following to answer questions 2830 The company lent $200,000 on November 1,20A at 3% simple interest for 18 months. 28.$ Determine interest revenue for 20A 29.$ Determine interest revenue for 203 30.$ Determine interest revenue for 20C